Door-lock.



DOORJAOCK.

Application flied January 1G, 1914i,

This: inviziition relates to eertein new end. nsetnl iniin'oveinents in door locks, and has its objeet the provision of novel and etiv n or wiring.; the looking bolt hier' to un iinloelied position y inserted .in the leek ,from the il. m, the invention is to provide e, door,Y loelr l which the loe-k is secured against tnrnh Witheet manipuletion of the lrnoiJ :heft eentrolling the operntion oi the door` latch,

"lilith the ebo'` end ether objects in View will n ppeerr iw. the further description el invention, the invention resides in the nevel Construction, eoinhinetion and nz "MIL/enit oit parte to be 'hereinafter more ointecjl ont und then claimed, and in aine; the invention in det-dil, reference will be had to the accompanying drawing forming; e part o.. this speeitieation end like :nl xmervis of reference Will be designate like parts 'throughout it 'views el the drawings in e l is e, sectional elevation teken on Ae 'll et Fig. 2 is e vertical l View showing the lool; mechanism side elevation, mid, Fig. is i transverse "vertical sectional View teken en the line C". of, iiitg. 2.

To pnt my iiwention into practice, I proiriile i leek :using oi? the nenni form, proi'iii l 'with en eseifitoheon plete ti, which eesing is talented to be mortised into the door in the usuel mennen in the lock easing 5 neer tV e upper ie thereof is arranged :1 keeper or housing; 7 in'ivl'iieh the latch bolt t5 is nnnnited, seid letoh bolt being; pivotelly i et i) to :in erin l() carried by the 'whicirh es usuel, is provided on oh l2. l iw lock casing 5 is mountto which is secured one end ring l5, the how o'l seid, spring tier-it the erm 10 and normally Speeineatien of Potent.

Qirtnten'teil Ang. et, 1914i,

Serial No. 812.451.

sitien. .ihe other end of seid bowed spring l5 beers against an arm i6 enriied by n dog i7 that is .nivotelly-mounted :Le :it 18 'in the lower end et' the bruni-:et lll. lil is sliihaiiieinnnnteil in the lower portion o? the resin; ii, :ind is provided on itsnpper edge with :i l ,rieso'l' teeth 20, to cooperate with the tooth 3l ot' the dog 17.

.i,m1'11:iled in the lool( easing .fi transversely thereof is e sleeve Q9 which is extended et one end beyond the lock easing mid beyond the inner lnee ol the door 23 to which the leek is ewgiieil. On seid extended end this sleeve provided with e suitable handle or knob 24, :ind :ufijneent the inner face o the door provided with oppositely-disposed apertures 25,243, respeetively,with one or the other el' which the tooth f2? of :i latch dog 28 is adapted to be engaged, said latch clog being pivotelly secured lto the inner uoe of seid door 23 adjacent the shaft 2Q. In the inner end et seid sleeve 22 is a Squared shaft ik), on which is mounted :i toothed wheel 273() that meshes with the teeth .2O of the lock holt ifi, the Sqn-ered shaft 29 projecting beyond the said wheel 30 so as to form :i preji on whieh receives the socket end 31 o't n, hey $32. The sleeve or hollow shaft 22, wheel 30 und shaft 29 rotate in unison, and muy be operated by a handle 24 0r a key 30. l bushing 32S jonrnixled in one 0l the side wells ezi fhe easing 5 and in n supporting plete il `eimstitntes n bearing); in which theV .inner end et the key 32 rotate.

With the leteh dog engaged with opening 25 as shown in Figs. l and 3, the lock bolt is held seemel y :ig-einst turning by the key, so that the their, when the latch dog 28 is engaged, eeneot be unlocked by the key. iV ith the latch ring; 28 raised out ot engagement with open 'ng Q6, the loek'har 19 is still held against ri, notion by Ineens of the key, by reason et the tooth 2l ot' dog 17 being enraged with the teeth of said lock bolt 19. To release the lock bolt, :Lifter latch dog 28 has been released, it is necessary to turn imei 12%. which causes arm 10 in its rearward movement to canse spring l5 to push against erm l ol" the'dog 17, which retraets the tooth el" the letter from the teeth 'of the loch bei, so that seid' .leek ber may be retrzntted remwzn-dly by Ineens of the key 32, in ense it is desired to hold the look bar l) in the retracted position, the sleeve or hollow shel't turned so that lock dog 98 The lock bolt i (ill 

